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Astronomers agree that the universe is growing larger, and that the rate of expansion—called the Hubble constant—is accelerating. What they don’t agree on is the best way to measure that expansion rate. Current methods have produced numbers that don’t align.…
Good news for young children around the globe, especially those in Africa: the first approved malaria vaccine has been introduced in a pilot program in Malawi, Ghana, and Kenya. Experts will soon determine how to expand the program to protect…
They went looking for a sacred well. But archaeologists working beneath the ancient Mexican city of Chichén Itzá discovered something far more surprising: vases, decorative plates, incense burners, and other ritual artifacts left more than 1,000 years ago in an…
When prospectors converged on San Francisco’s waterfront in the 1840s, eager to find gold, some left their boats in a shallow cove and went off in search of their fortunes. The ships, many in poor shape from the start, began…
Could the Russian military be using marine mammals as spies? That’s the question being asked after a beluga whale was found near a Russian naval base off the coast of Norway, outfitted with a harness that could hold a GoPro…
Archaeologists in western India have uncovered thousands of prehistoric rock carvings, known as petroglyphs, that could be the oldest ever found. Depicting animals, people, sea creatures, and more, the hilltop etchings were mostly hidden by layers of soil and mud.…
When Alex Honnold decided to climb Yosemite’s El Capitan without a rope or safety gear in June 2017, filmmaker and fellow elite climber Jimmy Chin (and crew) were there to capture every move. As Honnold ascended the 3,000-foot granite face,…
The discovery of 200 million-year-old dinosaur bones in what is now South Africa has led to the identification of a 12-ton creature that walked on four legs and crouched like a cat. The giant plant eater was a sauropodomorph, a…
China outlawed the trading of ivory in late 2017. Since then, fewer people in that country seem interested in buying it. About 30,000 African elephants were being killed each year to meet the demands of the legal and illegal trades.…
You’ve probably heard the saying “practice makes perfect,” but when it comes to athletics, your genetic makeup matters, too. There are three distinct body types—the scientific term is “somatotypes”—ranging from thin with a fast metabolism to stocky with a slower…